Question

What is the measure of angle 1?

A: 102 degrees
B: 80 degrees
C: 78 degrees
D: 88 degrees

Answer 1

<1 = 78

Explanation:

<1 and 102 are supplementary angles so they add to 180 degrees

<1 + 102 = 180

Subtract 102 from each side

<1 + 102 -102 = 180-102

<1 = 78